CN116339282A - Dynamic fault detection method and detection device for electric automobile - Google Patents
Dynamic fault detection method and detection device for electric automobile Download PDFInfo
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- CN116339282A CN116339282A CN202310259990.XA CN202310259990A CN116339282A CN 116339282 A CN116339282 A CN 116339282A CN 202310259990 A CN202310259990 A CN 202310259990A CN 116339282 A CN116339282 A CN 116339282A
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- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
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Abstract
The disclosure relates to an electric vehicle dynamic fault detection method, an electric vehicle dynamic fault detection device, a storage medium and a vehicle-mounted controller. The dynamic fault detection method of the electric automobile is based on a CAN bus, and CAN communication between the electric automobile and fault simulation equipment is established; receiving trigger information of simulated fault occurrence sent by fault simulation equipment; generating a fault handling response to the simulated fault in response to receiving trigger information of the simulated fault; based on the fault handling response to the simulated fault, reliability of the vehicle-mounted controller when performing dynamic fault detection processing of the electric vehicle is determined. In the application, before the electric automobile leaves the factory, trigger information that the simulation fault that sends through receiving the fault simulation equipment takes place triggers the simulation fault, and the reliability when detecting the electric automobile dynamic fault detection processing is carried out to the vehicle-mounted controller through the simulation fault that takes place production corresponding fault processing response, is favorable to effectively determining whether the electric automobile is up to standard to the reliability of dynamic fault detection processing.
Description
Technical Field
The disclosure relates to the field of information technology, and in particular relates to an electric vehicle dynamic fault detection method, an electric vehicle dynamic fault detection device, a storage medium and a vehicle-mounted controller.
Background
Along with the increasing promotion of the market attention of the new energy automobiles and a series of policies which are better than the new energy automobiles and are promoted by the nation, the sales of the new energy automobiles in China are obviously promoted. Because the technology of the new energy vehicle is not as high as that of the traditional fuel oil vehicle, accidents such as overheat and fire of a power battery and the like are often caused. This provides a test for reliability in the failure detection process of the new energy vehicle.
Disclosure of Invention
In view of this, the embodiments of the present disclosure desire to provide a method for detecting dynamic faults of an electric vehicle, an apparatus for detecting dynamic faults of an electric vehicle, a storage medium, and an on-vehicle controller.
The technical scheme of the present disclosure is realized as follows:
in a first aspect, the present disclosure provides a method for detecting dynamic faults of an electric vehicle.
The method for detecting the dynamic fault of the electric automobile, provided by the embodiment of the disclosure, is applied to a vehicle-mounted controller and comprises the following steps:
based on the CAN bus, CAN communication between the fault simulation equipment and the CAN bus is established;
receiving trigger information of simulated faults sent by fault simulation equipment, wherein the trigger information is based on CAN communication transmission;
generating a fault handling response to the simulated fault in response to receiving trigger information of the simulated fault;
and determining the reliability of the vehicle-mounted controller when the vehicle-mounted controller executes dynamic fault detection processing of the electric vehicle based on the fault processing response to the simulated fault.
In some embodiments, the trigger information includes message information;
the message information at least comprises a message ID identifier and message segment information; the message ID is used for identifying the message information as trigger information for simulating fault occurrence;
the message segment information is used for identifying the fault type of the simulated fault;
the fault type of the simulated fault comprises at least one of the following:
the temperature of the simulated power battery is too high, the temperature difference of the simulated power battery is too high, the temperature of the simulated motor is too high, the temperature of a simulated motor controller is too high, and the temperature of the simulated power battery is out of control.
In some embodiments, the message segment information includes a first flag bit, a second flag bit, a third flag bit, a fourth flag bit, and a fifth flag bit;
the first zone bit is used for marking the effectiveness of the simulated fault when the simulated power battery is too high in temperature;
the second zone bit is used for marking the effectiveness of the simulated fault when the temperature difference of the simulated power battery is overlarge;
the third zone bit is used for identifying the effectiveness of the simulated fault when the simulated motor is too high in temperature;
the fourth zone bit is used for identifying the effectiveness of the simulated fault when the simulated motor controller is too high in temperature;
the fifth flag bit is used for identifying that the fault type of the simulated fault is effectiveness of the simulated power battery in thermal runaway.
In some embodiments, the generating a fault handling response to the simulated fault in response to receiving trigger information for the simulated fault to occur includes:
if the simulated fault generated by triggering of the triggering information is that the temperature of the simulated power battery is too high, generating a fault processing response to the temperature of the simulated power battery is too high; or alternatively, the first and second heat exchangers may be,
if the temperature difference of the simulated power battery generated by triggering of the triggering information is overlarge, generating a fault processing response to the overlarge temperature difference of the simulated power battery; or alternatively, the first and second heat exchangers may be,
if the temperature of the simulation motor generated by triggering of the triggering information is too high, generating a fault processing response to the temperature of the simulation motor; or alternatively, the first and second heat exchangers may be,
if the temperature of the analog motor controller generated by triggering of the triggering information is too high, generating fault processing response to the temperature of the analog motor controller; or alternatively, the first and second heat exchangers may be,
and if the trigger information triggers the generated thermal runaway of the simulated power battery, generating a fault handling response to the thermal runaway of the simulated power battery.
In some embodiments, the determining the reliability of the vehicle-mounted controller when performing the dynamic fault detection process of the electric vehicle based on the fault handling response to the simulated fault includes:
if the fault processing response to the simulated fault meets the fault processing response standard, determining that the reliability of the vehicle-mounted controller in executing the dynamic fault detection processing of the electric vehicle meets the standard;
if the fault processing response to the simulated fault does not meet the fault processing response standard, determining that the reliability of the vehicle-mounted controller in executing the dynamic fault detection processing of the electric vehicle does not reach the standard.
In some embodiments, the on-board controller comprises a power battery controller, a motor controller;
based on the fault processing response to the simulated fault, determining the reliability of the vehicle-mounted controller when executing the dynamic fault detection processing of the electric vehicle comprises the following steps:
determining reliability of the power battery controller when performing dynamic fault detection processing of the electric vehicle based on fault processing response to the simulated power battery temperature being too high, the simulated power battery temperature difference being too large and/or the simulated power battery thermal runaway;
and determining the reliability of the motor controller when the motor controller executes dynamic fault detection processing of the electric automobile based on fault processing response to the excessive temperature of the simulated motor and/or the excessive temperature of the simulated motor controller.
In a second aspect, the present disclosure provides an electric vehicle dynamic fault detection device, applied to a vehicle-mounted controller, including:
the CAN communication module is used for establishing CAN communication with the fault simulation equipment based on a CAN bus;
the information receiving module is used for receiving trigger information of simulation faults sent by the fault simulation equipment, wherein the trigger information is based on CAN communication transmission;
the fault response module is used for responding to the received triggering information of the simulation fault occurrence and generating fault processing response to the simulation fault;
and the reliability determination module is used for determining the reliability of the vehicle-mounted controller when the vehicle-mounted controller executes the dynamic fault detection processing of the electric vehicle based on the fault processing response to the simulated fault.
In some embodiments, the trigger information includes message information;
the message information at least comprises a message ID identifier and message segment information; the message ID is used for identifying the message information as trigger information for simulating fault occurrence;
the message segment information is used for identifying the fault type of the simulated fault;
the fault type of the simulated fault comprises at least one of the following:
the temperature of the simulated power battery is too high, the temperature difference of the simulated power battery is too high, the temperature of the simulated motor is too high, the temperature of a simulated motor controller is too high, and the temperature of the simulated power battery is out of control.
In a third aspect, the present disclosure provides a computer readable storage medium having stored thereon an electric vehicle dynamic fault detection program, which when executed by a processor, implements the electric vehicle dynamic fault detection method described in the first aspect.
In a fourth aspect, the present disclosure provides a vehicle-mounted controller, including a memory, a processor, and an electric vehicle dynamic fault detection program stored in the memory and capable of running on the processor, where the processor implements the electric vehicle dynamic fault detection method described in the first aspect when executing the electric vehicle dynamic fault detection program.
The method for detecting the dynamic fault of the electric automobile, which is disclosed by the embodiment of the invention, is applied to a vehicle-mounted controller and comprises the following steps: based on the CAN bus, CAN communication between the fault simulation equipment and the CAN bus is established; receiving trigger information of simulated faults sent by fault simulation equipment, wherein the trigger information is based on CAN communication transmission; generating a fault handling response to the simulated fault in response to receiving trigger information of the simulated fault; based on the fault handling response to the simulated fault, reliability of the vehicle-mounted controller when performing dynamic fault detection processing of the electric vehicle is determined. In the application, before the electric automobile leaves the factory, trigger information that the simulation fault that sends through receiving the fault simulation equipment takes place triggers the simulation fault, and the reliability when detecting the electric automobile dynamic fault detection processing is carried out to the vehicle-mounted controller through the simulation fault that takes place production corresponding fault processing response, is favorable to effectively determining whether the electric automobile is up to standard to the reliability of dynamic fault detection processing.
Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
FIG. 1 is a flowchart illustrating a method for dynamic fault detection of an electric vehicle, according to an exemplary embodiment;
fig. 2 is a schematic structural diagram illustrating an electric vehicle dynamic fault detection device according to an exemplary embodiment.
Detailed Description
Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.
Along with the increasing promotion of the market attention of the new energy automobiles and a series of policies which are better than the new energy automobiles and are promoted by the nation, the sales of the new energy automobiles in China are obviously promoted. Because the technology of the new energy vehicle is not as high as that of the traditional fuel oil vehicle, accidents such as overheat and fire of a power battery and the like are often caused. This provides a test for reliability in the failure detection process of the new energy vehicle.
Aiming at the situation, the disclosure provides a dynamic fault detection method of an electric automobile, which is applied to a vehicle-mounted controller. After the new energy vehicle completes assembly, software configuration and basic detection in a factory, the new energy vehicle can simulate and test important faults aiming at each controller, ensure that the fault detection and alarm functions are normal when the vehicle leaves a factory, and provide basic guarantee for vehicle fault alarm when a user uses the vehicle. Fig. 1 is a flowchart illustrating a method for dynamic fault detection of an electric vehicle according to an exemplary embodiment. As shown in fig. 1, the method for detecting dynamic faults of an electric automobile includes:
and step 13, determining the reliability of the vehicle-mounted controller when the vehicle-mounted controller executes dynamic fault detection processing of the electric vehicle based on fault processing response to the simulated fault.
In the present exemplary embodiment, the reliability when the in-vehicle controller performs the electric vehicle dynamic fault detection process includes: the reliability of a fault solving strategy and the reliability of fault alarming during dynamic fault detection processing of the electric automobile are improved.
The method for detecting the dynamic fault of the electric automobile, which is disclosed by the embodiment of the invention, is applied to a vehicle-mounted controller and comprises the following steps: based on the CAN bus, CAN communication between the fault simulation equipment and the CAN bus is established; receiving trigger information of simulated faults sent by fault simulation equipment, wherein the trigger information is based on CAN communication transmission; generating a fault handling response to the simulated fault in response to receiving trigger information of the simulated fault; based on the fault handling response to the simulated fault, reliability of the vehicle-mounted controller when performing dynamic fault detection processing of the electric vehicle is determined. In the application, before the electric automobile leaves the factory, trigger information that the simulation fault that sends through receiving the fault simulation equipment takes place triggers the simulation fault, and the reliability when detecting the electric automobile dynamic fault detection processing is carried out to the vehicle-mounted controller through the simulation fault that takes place production corresponding fault processing response, is favorable to effectively determining whether the electric automobile is up to standard to the reliability of dynamic fault detection processing.
In some embodiments, the trigger information includes message information;
the message information at least comprises a message ID identifier and message segment information; the message ID is used for identifying the message information as trigger information for simulating fault occurrence;
the message segment information is used for identifying the fault type of the simulated fault;
the fault type of the simulated fault comprises at least one of the following:
the temperature of the simulated power battery is too high, the temperature difference of the simulated power battery is too high, the temperature of the simulated motor is too high, the temperature of a simulated motor controller is too high, and the temperature of the simulated power battery is out of control.
In the present exemplary embodiment, the message segment information includes a flag bit for identifying a fault type of the simulated fault. When the flag bit is one, the fault type of the simulated fault can be determined through the flag sign of the flag bit. For example, if the flag sign of the flag bit is 1, determining that the fault type of the simulated fault is that the temperature of the simulated power battery is too high; and if the sign of the sign bit is 2, determining that the fault type of the simulated fault is that the temperature difference of the simulated power battery is overlarge, and so on.
The receiving the trigger information of the simulated fault occurrence sent by the fault simulation equipment comprises the following steps:
if the trigger information is information which is verified and encrypted through a verification algorithm, verifying and decrypting the verified and encrypted trigger information, and determining the legality of the trigger information;
based on the triggering information with validity, generating a fault handling response to the simulated fault. The security of the trigger information can be effectively improved through encryption and decryption of a verification algorithm.
In this exemplary embodiment, generating a fault handling response to the simulated fault in response to receiving trigger information for the simulated fault occurrence includes:
the trigger information can simulate the signal expression when the real fault occurs. For example, the analog motor controller is too hot. The detection signal of the motor controller with overhigh temperature can be generated when the temperature of the real motor controller is overhigh, and the trigger information generated by triggering the simulation motor controller with overhigh temperature can be used for indicating the detection signal of the motor controller with overhigh temperature to the controller, so that the aim of overhigh temperature of the motor controller is achieved.
In some embodiments, the message segment information includes a first flag bit, a second flag bit, a third flag bit, a fourth flag bit, and a fifth flag bit;
the first zone bit is used for marking the effectiveness of the simulated fault when the simulated power battery is too high in temperature;
the second zone bit is used for marking the effectiveness of the simulated fault when the temperature difference of the simulated power battery is overlarge;
the third zone bit is used for identifying the effectiveness of the simulated fault when the simulated motor is too high in temperature;
the fourth zone bit is used for identifying the effectiveness of the simulated fault when the simulated motor controller is too high in temperature;
the fifth flag bit is used for identifying that the fault type of the simulated fault is effectiveness of the simulated power battery in thermal runaway.
In the present exemplary embodiment, when the message segment information has a plurality of flag bits, a first flag bit, a second flag bit, a third flag bit, a fourth flag bit, and a fifth flag bit may be included. When the flag bit is 1, the flag bit is valid, and 0 is invalid. For example, if the first flag bit is 1, the second flag bit is 0, the third flag bit is 0, the fourth flag bit is 0, and the fifth flag bit is 0, the fault type of the simulated fault is that the temperature of the simulated power battery is too high; the first zone bit is 0, the second zone bit is 1, the third zone bit is 0, the fourth zone bit is 0 and the fifth zone bit is 0, and the like, which indicates that the fault type of the simulated fault is that the temperature difference of the simulated power battery is overlarge. Thus, the simulated fault indicated by the message information is determined through the flag bit of the message segment information.
In this exemplary embodiment, the generating, in response to receiving trigger information of occurrence of the simulated fault, a fault handling response to the simulated fault includes:
if the simulated fault generated by triggering of the triggering information is that the temperature of the simulated power battery is too high, generating a fault processing response to the temperature of the simulated power battery is too high; or alternatively, the first and second heat exchangers may be,
if the temperature difference of the simulated power battery generated by triggering of the triggering information is overlarge, generating a fault processing response to the overlarge temperature difference of the simulated power battery; or alternatively, the first and second heat exchangers may be,
if the temperature of the simulation motor generated by triggering of the triggering information is too high, generating a fault processing response to the temperature of the simulation motor; or alternatively, the first and second heat exchangers may be,
if the temperature of the analog motor controller generated by triggering of the triggering information is too high, generating fault processing response to the temperature of the analog motor controller; or alternatively, the first and second heat exchangers may be,
and if the trigger information triggers the generated thermal runaway of the simulated power battery, generating a fault handling response to the thermal runaway of the simulated power battery.
In this exemplary embodiment, the determining, based on the fault handling response to the simulated fault, reliability of the in-vehicle controller when performing the dynamic fault detection process of the electric vehicle includes:
if the fault processing response to the simulated fault meets the fault processing response standard, determining that the reliability of the vehicle-mounted controller in executing the dynamic fault detection processing of the electric vehicle meets the standard;
if the fault processing response to the simulated fault does not meet the fault processing response standard, determining that the reliability of the vehicle-mounted controller in executing the dynamic fault detection processing of the electric vehicle does not reach the standard.
In the present exemplary embodiment, the vehicle-mounted controller includes a power battery controller, a motor controller;
based on the fault processing response to the simulated fault, determining the reliability of the vehicle-mounted controller when executing the dynamic fault detection processing of the electric vehicle comprises the following steps:
determining reliability of the power battery controller when performing dynamic fault detection processing of the electric vehicle based on fault processing response to the simulated power battery temperature being too high, the simulated power battery temperature difference being too large and/or the simulated power battery thermal runaway;
and determining the reliability of the motor controller when the motor controller executes dynamic fault detection processing of the electric automobile based on fault processing response to the excessive temperature of the simulated motor and/or the excessive temperature of the simulated motor controller.
In this exemplary embodiment, when determining the reliability of the power battery controller in performing the dynamic fault detection process of the electric vehicle, it may be determined, according to the detection requirement, that the reliability of the power battery controller in performing the dynamic fault detection process of the electric vehicle meets the fault processing response criteria when determining that the temperature of the simulated power battery is too high, the temperature difference of the simulated power battery is too large, and the fault processing response of the simulated power battery is thermal runaway, or that the reliability of the power battery controller in performing the dynamic fault detection process of the electric vehicle meets the fault processing response criteria when one or both of them meets the fault processing response criteria. The reliability of the motor controller when executing the dynamic fault detection processing of the electric automobile is determined in the same way as the determination method, and the reliability can be determined according to the detection requirement.
The solution strategy for the excessive temperature of the simulated power battery may be parking, the solution strategy for the excessive temperature difference of the simulated power battery may be parking, the solution strategy for the excessive temperature of the simulated motor may be power reduction, the solution strategy for the excessive temperature of the simulated motor controller may be power reduction, and the solution strategy for the thermal runaway of the simulated power battery may be flameout.
In the present exemplary embodiment, determining that the fault handling responses all meet the fault handling response criteria includes enabling the vehicle-mounted controller to solve the generated simulated fault and perform fault alerting when performing dynamic fault detection processing on the electric vehicle.
In this exemplary embodiment, generating a fault handling response to the simulated fault in response to receiving trigger information for the simulated fault occurrence includes:
and generating fault processing response to the simulated fault after continuously receiving the triggering information for N times. After the trigger information is continuously received for N times, the authenticity of the simulation fault determination can be effectively improved, and false triggering is avoided.
The method for detecting the dynamic fault of the electric automobile off line comprises the following steps:
the vehicle is connected with high pressure and reaches a ready state by operating the key;
the fault simulation device (CAN message transmitting/receiving device) is connected to the CAN bus of the vehicle through a vehicle diagnosis port;
sequentially simulating faults of overhigh battery temperature, overlarge battery temperature difference, overtemperature of a motor controller and thermal runaway of a power battery, simulating only one fault at a time, calculating a check code according to a signal position 1 of the corresponding fault, and transmitting according to a defined period;
observing the vehicle phenomenon and monitoring the attention signal to confirm whether the acceptance criterion is met;
after verification is completed, the fault analog bit signal value is restored to 0, and the key is operated to an OFF gear;
re-operating the key to enable the vehicle to be in a ready state, and checking whether the simulated fault phenomenon is eliminated;
other fault simulations were also performed in this step.
The disclosure provides an electric automobile dynamic fault detection device, which is applied to a vehicle-mounted controller. Fig. 2 is a schematic structural diagram illustrating an electric vehicle dynamic fault detection device according to an exemplary embodiment. As shown in fig. 2, the electric vehicle dynamic fault detection device includes:
the CAN communication module 20 is used for establishing CAN communication with the fault simulation equipment based on a CAN bus;
an information receiving module 21, configured to receive trigger information of occurrence of a simulation fault sent by a fault simulation device, where the trigger information is based on the CAN communication transmission;
a fault response module 22, configured to generate a fault handling response to the simulated fault in response to receiving trigger information of occurrence of the simulated fault;
the reliability determination module 23 is configured to determine reliability when the vehicle-mounted controller performs dynamic fault detection processing of the electric vehicle, based on a fault processing response to the simulated fault.
In the present exemplary embodiment, the reliability when the in-vehicle controller performs the electric vehicle dynamic fault detection process includes: the reliability of a fault solving strategy and the reliability of fault alarming during dynamic fault detection processing of the electric automobile are improved.
The electric automobile dynamic fault detection device according to the embodiment of the disclosure is applied to a vehicle-mounted controller, and comprises: based on the CAN bus, CAN communication between the fault simulation equipment and the CAN bus is established; receiving trigger information of simulated faults sent by fault simulation equipment, wherein the trigger information is based on CAN communication transmission; generating a fault handling response to the simulated fault in response to receiving trigger information of the simulated fault; based on the fault handling response to the simulated fault, reliability of the vehicle-mounted controller when performing dynamic fault detection processing of the electric vehicle is determined. In the application, before the electric automobile leaves the factory, trigger information that the simulation fault that sends through receiving the fault simulation equipment takes place triggers the simulation fault, and the reliability when detecting the electric automobile dynamic fault detection processing is carried out to the vehicle-mounted controller through the simulation fault that takes place production corresponding fault processing response, is favorable to effectively determining whether the electric automobile is up to standard to the reliability of dynamic fault detection processing.
In some embodiments, the trigger information includes message information;
the message information at least comprises a message ID identifier and message segment information; the message ID is used for identifying the message information as trigger information for simulating fault occurrence;
the message segment information is used for identifying the fault type of the simulated fault;
the fault type of the simulated fault comprises at least one of the following:
the temperature of the simulated power battery is too high, the temperature difference of the simulated power battery is too high, the temperature of the simulated motor is too high, the temperature of a simulated motor controller is too high, and the temperature of the simulated power battery is out of control.
In the present exemplary embodiment, the message segment information includes a flag bit for identifying a fault type of the simulated fault. When the flag bit is one, the fault type of the simulated fault can be determined through the flag sign of the flag bit. For example, if the flag sign of the flag bit is 1, determining that the fault type of the simulated fault is that the temperature of the simulated power battery is too high; and if the sign of the sign bit is 2, determining that the fault type of the simulated fault is that the temperature difference of the simulated power battery is overlarge, and so on.
The receiving the trigger information of the simulated fault occurrence sent by the fault simulation equipment comprises the following steps:
if the trigger information is information which is verified and encrypted through a verification algorithm, verifying and decrypting the verified and encrypted trigger information, and determining the legality of the trigger information;
based on the triggering information with validity, generating a fault handling response to the simulated fault. The security of the trigger information can be effectively improved through encryption and decryption of a verification algorithm.
In some embodiments, the message segment information includes a first flag bit, a second flag bit, a third flag bit, a fourth flag bit, and a fifth flag bit;
the first zone bit is used for marking the effectiveness of the simulated fault when the simulated power battery is too high in temperature;
the second zone bit is used for marking the effectiveness of the simulated fault when the temperature difference of the simulated power battery is overlarge;
the third zone bit is used for identifying the effectiveness of the simulated fault when the simulated motor is too high in temperature;
the fourth zone bit is used for identifying the effectiveness of the simulated fault when the simulated motor controller is too high in temperature;
the fifth flag bit is used for identifying that the fault type of the simulated fault is effectiveness of the simulated power battery in thermal runaway.
In the present exemplary embodiment, when the message segment information has a plurality of flag bits, a first flag bit, a second flag bit, a third flag bit, a fourth flag bit, and a fifth flag bit may be included. When the flag bit is 1, the flag bit is valid, and 0 is invalid. For example, if the first flag bit is 1, the second flag bit is 0, the third flag bit is 0, the fourth flag bit is 0, and the fifth flag bit is 0, the fault type of the simulated fault is that the temperature of the simulated power battery is too high; the first zone bit is 0, the second zone bit is 1, the third zone bit is 0, the fourth zone bit is 0 and the fifth zone bit is 0, and the like, which indicates that the fault type of the simulated fault is that the temperature difference of the simulated power battery is overlarge. Thus, the simulated fault indicated by the message information is determined through the flag bit of the message segment information.
In some embodiments, the generating a fault handling response to the simulated fault in response to receiving trigger information for the simulated fault to occur includes:
if the simulated fault generated by triggering of the triggering information is that the temperature of the simulated power battery is too high, generating a fault processing response to the temperature of the simulated power battery is too high; or alternatively, the first and second heat exchangers may be,
if the temperature difference of the simulated power battery generated by triggering of the triggering information is overlarge, generating a fault processing response to the overlarge temperature difference of the simulated power battery; or alternatively, the first and second heat exchangers may be,
if the temperature of the simulation motor generated by triggering of the triggering information is too high, generating a fault processing response to the temperature of the simulation motor; or alternatively, the first and second heat exchangers may be,
if the temperature of the analog motor controller generated by triggering of the triggering information is too high, generating fault processing response to the temperature of the analog motor controller; or alternatively, the first and second heat exchangers may be,
and if the trigger information triggers the generated thermal runaway of the simulated power battery, generating a fault handling response to the thermal runaway of the simulated power battery.
In some embodiments, the determining the reliability of the vehicle-mounted controller when performing the dynamic fault detection process of the electric vehicle based on the fault handling response to the simulated fault includes:
if the fault processing response to the simulated fault meets the fault processing response standard, determining that the reliability of the vehicle-mounted controller in executing the dynamic fault detection processing of the electric vehicle meets the standard;
if the fault processing response to the simulated fault does not meet the fault processing response standard, determining that the reliability of the vehicle-mounted controller in executing the dynamic fault detection processing of the electric vehicle does not reach the standard.
In some embodiments, the on-board controller comprises a power battery controller, a motor controller;
based on the fault processing response to the simulated fault, determining the reliability of the vehicle-mounted controller when executing the dynamic fault detection processing of the electric vehicle comprises the following steps:
determining reliability of the power battery controller when performing dynamic fault detection processing of the electric vehicle based on fault processing response to the simulated power battery temperature being too high, the simulated power battery temperature difference being too large and/or the simulated power battery thermal runaway;
and determining the reliability of the motor controller when the motor controller executes dynamic fault detection processing of the electric automobile based on fault processing response to the excessive temperature of the simulated motor and/or the excessive temperature of the simulated motor controller.
In this exemplary embodiment, when determining the reliability of the power battery controller in performing the dynamic fault detection process of the electric vehicle, it may be determined, according to the detection requirement, that the reliability of the power battery controller in performing the dynamic fault detection process of the electric vehicle meets the fault processing response criteria when determining that the temperature of the simulated power battery is too high, the temperature difference of the simulated power battery is too large, and the fault processing response of the simulated power battery is thermal runaway, or that the reliability of the power battery controller in performing the dynamic fault detection process of the electric vehicle meets the fault processing response criteria when one or both of them meets the fault processing response criteria. The reliability of the motor controller when executing the dynamic fault detection processing of the electric automobile is determined in the same way as the determination method, and the reliability can be determined according to the detection requirement.
In the present exemplary embodiment, determining that the fault handling responses all meet the fault handling response criteria includes enabling the vehicle-mounted controller to solve the generated simulated fault and perform fault alerting when performing dynamic fault detection processing on the electric vehicle.
In this exemplary embodiment, generating a fault handling response to the simulated fault in response to receiving trigger information for the simulated fault occurrence includes:
and generating fault processing response to the simulated fault after continuously receiving the triggering information for N times. After the trigger information is continuously received for N times, the authenticity of the simulation fault determination can be effectively improved, and false triggering is avoided.
The present disclosure provides a computer readable storage medium, on which an electric vehicle dynamic fault detection program is stored, which when executed by a processor, implements the electric vehicle dynamic fault detection method described in the above embodiments.
The disclosure provides a vehicle-mounted controller, which comprises a memory, a processor and an electric vehicle dynamic fault detection program stored in the memory and capable of running on the processor, wherein the electric vehicle dynamic fault detection method of the embodiments is realized when the processor executes the electric vehicle dynamic fault detection program.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as a ordered listing of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium may even be paper or other suitable medium upon which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present disclosure.
Furthermore, the terms "first," "second," and the like, as used in embodiments of the present disclosure, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in the present embodiment. Thus, a feature of an embodiment of the present disclosure that is defined by terms such as "first," "second," and the like may explicitly or implicitly indicate that at least one such feature is included in the embodiment. In the description of the present disclosure, the word "plurality" means at least two or more, for example, two, three, four, etc., unless explicitly specified otherwise in the examples.
In this disclosure, unless expressly specified or limited otherwise in the examples, the terms "mounted," "connected," and "secured" and the like as used in the examples are intended to be broadly construed, as for example, the connection may be a fixed connection, may be a removable connection, or may be integral, and as may be a mechanical connection, an electrical connection, or the like; of course, it may be directly connected, or indirectly connected through an intermediate medium, or may be in communication with each other, or in interaction with each other. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art depending on the specific implementation.
In this disclosure, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Although embodiments of the present disclosure have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the present disclosure, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the present disclosure.
Claims (10)
1. The dynamic fault detection method for the electric automobile is characterized by being applied to a vehicle-mounted controller and comprising the following steps of:
based on the CAN bus, CAN communication between the fault simulation equipment and the CAN bus is established;
receiving trigger information of simulated faults sent by fault simulation equipment, wherein the trigger information is based on CAN communication transmission;
generating a fault handling response to the simulated fault in response to receiving trigger information of the simulated fault;
and determining the reliability of the vehicle-mounted controller when the vehicle-mounted controller executes dynamic fault detection processing of the electric vehicle based on the fault processing response to the simulated fault.
2. The method for detecting dynamic faults of an electric automobile according to claim 1, wherein the trigger information comprises message information;
the message information at least comprises a message ID identifier and message segment information; the message ID is used for identifying the message information as trigger information for simulating fault occurrence;
the message segment information is used for identifying the fault type of the simulated fault;
the fault type of the simulated fault comprises at least one of the following:
the temperature of the simulated power battery is too high, the temperature difference of the simulated power battery is too high, the temperature of the simulated motor is too high, the temperature of a simulated motor controller is too high, and the temperature of the simulated power battery is out of control.
3. The method for detecting dynamic faults of an electric automobile according to claim 2, wherein the message segment information comprises a first zone bit, a second zone bit, a third zone bit, a fourth zone bit and a fifth zone bit;
the first zone bit is used for marking the effectiveness of the simulated fault when the simulated power battery is too high in temperature;
the second zone bit is used for marking the effectiveness of the simulated fault when the temperature difference of the simulated power battery is overlarge;
the third zone bit is used for identifying the effectiveness of the simulated fault when the simulated motor is too high in temperature;
the fourth zone bit is used for identifying the effectiveness of the simulated fault when the simulated motor controller is too high in temperature;
the fifth flag bit is used for identifying that the fault type of the simulated fault is effectiveness of the simulated power battery in thermal runaway.
4. The method of claim 2, wherein generating a fault handling response to the simulated fault in response to receiving the trigger information for the simulated fault to occur comprises:
if the simulated fault generated by triggering of the triggering information is that the temperature of the simulated power battery is too high, generating a fault processing response to the temperature of the simulated power battery is too high; or alternatively, the first and second heat exchangers may be,
if the temperature difference of the simulated power battery generated by triggering of the triggering information is overlarge, generating a fault processing response to the overlarge temperature difference of the simulated power battery; or alternatively, the first and second heat exchangers may be,
if the temperature of the simulation motor generated by triggering of the triggering information is too high, generating a fault processing response to the temperature of the simulation motor; or alternatively, the first and second heat exchangers may be,
if the temperature of the analog motor controller generated by triggering of the triggering information is too high, generating fault processing response to the temperature of the analog motor controller; or alternatively, the first and second heat exchangers may be,
and if the trigger information triggers the generated thermal runaway of the simulated power battery, generating a fault handling response to the thermal runaway of the simulated power battery.
5. The method according to claim 1, wherein determining reliability of the in-vehicle controller in performing the electric vehicle dynamic fault detection process based on the fault handling response to the simulated fault comprises:
if the fault processing response to the simulated fault meets the fault processing response standard, determining that the reliability of the vehicle-mounted controller in executing the dynamic fault detection processing of the electric vehicle meets the standard;
if the fault processing response to the simulated fault does not meet the fault processing response standard, determining that the reliability of the vehicle-mounted controller in executing the dynamic fault detection processing of the electric vehicle does not reach the standard.
6. The method for detecting dynamic faults of an electric vehicle according to claim 2, wherein the vehicle-mounted controller comprises a power battery controller and a motor controller;
based on the fault processing response to the simulated fault, determining the reliability of the vehicle-mounted controller when executing the dynamic fault detection processing of the electric vehicle comprises the following steps:
determining reliability of the power battery controller when performing dynamic fault detection processing of the electric vehicle based on fault processing response to the simulated power battery temperature being too high, the simulated power battery temperature difference being too large and/or the simulated power battery thermal runaway;
and determining the reliability of the motor controller when the motor controller executes dynamic fault detection processing of the electric automobile based on fault processing response to the excessive temperature of the simulated motor and/or the excessive temperature of the simulated motor controller.
7. The utility model provides an electric automobile dynamic fault detection device which characterized in that is applied to on-vehicle controller, includes:
the CAN communication module is used for establishing CAN communication with the fault simulation equipment based on a CAN bus;
the information receiving module is used for receiving trigger information of simulation faults sent by the fault simulation equipment, wherein the trigger information is based on CAN communication transmission;
the fault response module is used for responding to the received triggering information of the simulation fault occurrence and generating fault processing response to the simulation fault;
and the reliability determination module is used for determining the reliability of the vehicle-mounted controller when the vehicle-mounted controller executes the dynamic fault detection processing of the electric vehicle based on the fault processing response to the simulated fault.
8. The electric vehicle dynamic fault detection device of claim 7, wherein the trigger information comprises message information;
the message information at least comprises a message ID identifier and message segment information; the message ID is used for identifying the message information as trigger information for simulating fault occurrence;
the message segment information is used for identifying the fault type of the simulated fault;
the fault type of the simulated fault comprises at least one of the following:
the temperature of the simulated power battery is too high, the temperature difference of the simulated power battery is too high, the temperature of the simulated motor is too high, the temperature of a simulated motor controller is too high, and the temperature of the simulated power battery is out of control.
9. A computer-readable storage medium, on which an electric vehicle dynamic fault detection program is stored, which when executed by a processor, implements the electric vehicle dynamic fault detection method of any one of claims 1-6.
10. A controller comprising a memory, a processor and an electric vehicle dynamic fault detection program stored on the memory and operable on the processor, wherein the processor implements the electric vehicle dynamic fault detection method of any one of claims 1-6 when executing the electric vehicle dynamic fault detection program.
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| CN202310259990.XA CN116339282A (en) | 2023-03-16 | 2023-03-16 | Dynamic fault detection method and detection device for electric automobile |
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